Well it’s kind of late to stop hollering into the ether now.
He believes ISIS is friendly also
“Well it’s kind of late to stop hollering into the ether now.”
Not really. Those omnidirectional radio emissions lacked enough focused energy (Watts) to be distinguished from the Cosmic background radio emissions and the emissions from the Sun to be reasonably detectable much father than the edge of the Solar System less than 1 light year from here. Even with the 1974 METI transmission, it is unlikely the transmission is detectable as a coherent message beyond about 20 light years. Experiment with the SETI Range Calculator:
http://www.satsig.net/seticalc.htm